[PATCH 1/4] drm/sti: check dma_set_coherent_mask return value

[Raphael Gallais-Pou]

Return value for DMA allocation was not checked.  Check it and return
error code in case of failing.

Signed-off-by: Raphael Gallais-Pou <rgallaispou at gmail.com>
---
 drivers/gpu/drm/sti/sti_drv.c | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/sti/sti_drv.c b/drivers/gpu/drm/sti/sti_drv.c
index 5e9332df21df0db30f10b7a6f5a41cba85c4f7ae..42f21ab91957b38cb9aef012b6ee7f4ae1683edf 100644
--- a/drivers/gpu/drm/sti/sti_drv.c
+++ b/drivers/gpu/drm/sti/sti_drv.c
@@ -234,8 +234,11 @@ static int sti_platform_probe(struct platform_device *pdev)
 	struct device_node *node = dev->of_node;
 	struct device_node *child_np;
 	struct component_match *match = NULL;
+	int ret;
 
-	dma_set_coherent_mask(dev, DMA_BIT_MASK(32));
+	ret = dma_set_coherent_mask(dev, DMA_BIT_MASK(32));
+	if (ret)
+		return ret;
 
 	devm_of_platform_populate(dev);
 

-- 
2.50.1